Technical information

MERLIN LEGEND Communications System
Issue 7 June 2001
5-11
Security Defaults and Tips
The following list identifies features and components that can be restricted by
FRLs, identifies the corresponding FRL, and discusses how the FRLs affect these
features and components.
 Voice Mail Integrated (VMI) Ports
The default FRL for VMI ports is now 0. This restricts all outcalling. (Refer
to Form 7d, “Group Calling.”)
 Default Local Route Table
The default FRL for the Default Local Route Table is now 2. No adjustment
to the route FRL is required. (Refer to Table 18 on Planning Form 3g, “ARS
Default and Special Numbers Table.”)
 Automatic Route Selection (ARS)
The customer receives the product with ARS activated and with all
extensions set to FRL 3. This allows all international calling. To prevent toll
fraud, set the ARS FRL to the appropriate value in the following list.
— 0 (restriction to inside calls only)
— 2 (restriction to local calls only)
— 3 (restriction to domestic long distance)
NOTE:
This restriction does not include area code 809, which is part
of the North American Numbering Plan (NANP).
— 4 (international calling)
NOTE:
In Release 3.1 and later systems, default local and default toll tables
are factory-assigned an FRL of 2. This simplifies the task of
restricting extensions; the FRL for an extension merely needs to be
changed from the default of 3.